In a dramatic turn of events, Iran’s largest bridge near Tehran has reportedly collapsed, with video footage capturing the moment. The collapse follows allegations of U.S. airstrikes, as shared by President Donald Trump on Thursday. He urged the Iranian regime to negotiate to prevent further escalation.
The B1 highway bridge, a crucial conduit between the Iranian capital and the western city of Karaj, stands as the tallest bridge in the Middle East. It was inaugurated earlier this year, marking a significant engineering achievement.
According to reports from Iran International, Iranian state television has hinted at possible retaliation. The Iranian military is said to have identified several bridges in nations allied with the U.S. in the Middle East as potential targets.
President Trump shared a video on social media showing a massive cloud of smoke and debris resulting from the bridge’s reported collapse.
“The largest bridge in Iran has fallen, never to be used again—more developments to come! IT IS TIME FOR IRAN TO MAKE A DEAL BEFORE IT IS TOO LATE, AND THERE IS NOTHING LEFT OF WHAT STILL COULD BECOME A GREAT COUNTRY!” Trump expressed in a Truth Social post.
“The biggest bridge in Iran comes tumbling down, never to be used again — Much more to follow! IT IS TIME FOR IRAN TO MAKE A DEAL BEFORE IT IS TOO LATE, AND THERE IS NOTHING LEFT OF WHAT STILL COULD BECOME A GREAT COUNTRY!” Trump said in a post on Truth Social.
The strike on the bridge was aimed at cutting drone and missile supply lines to Iranian firing units targeting U.S. and Israeli forces, Middle East outlet i24NEWS reported, citing sources.
Iranian state TV also said the bridge was hit twice, roughly an hour apart, resulting in civilian casualties, Fars News reported.
President Donald Trump pauses as he finishes speaking about the Iran war Wednesday, April 1, 2026, in Washington. (Alex Brandon-Pool/Getty Images)
“A few minutes ago, the American-Zionist enemy once again targeted the B1 bridge in Karaj,” the broadcast said, noting that the first strike killed two civilians.
Fars News also reported that other areas of Karaj were struck.
Iran’s IRGC reportedly identified several bridges in American-allied nations as potential targets after the collapse of the B1 bridge. (Morteza Nikoubazl/Nur Photo)
The outlet reported that Iran is considering plans to rebuild the bridge with the help of its engineers and experts.
In retaliation, Iran’s Islamic Revolutionary Guard Corps has reportedly identified several bridges in American-allied nations across the Middle East as potential targets, including infrastructure in Kuwait, Saudi Arabia, Bahrain, Abu Dhabi and the Jordan-West Bank region.
